package com.itheima.method;

public class Test5 {
    public static void main(String[] args) {
        int num = 100;
        System.out.println(num);
        change(num);
        System.out.println(num);
    }
    public static void change(int a){
        System.out.println("a = " + a);
        a = 200;
        System.out.println("a = " + a);
    }
}
